There are two versions of disk-type separators with solid wall bowl: separators used for separating two mutually insoluble liquids, and clarifiers used for separating solids from liquids. All functions are similar to the function of the clarifier and separator types with self-cleaning bowl.

The main difference between the disk-type separators with a solid-wall bowl and the types with self-cleaning bowl is that solid wall bowls are used almost exclusively for separating liquid mixtures without or with very low solids content, as the process of removing the separated solids can only take place manually.